Getting in ahead of Anthony Minghella - whose film version of Bernhard Schlink's novel is due for release next year - Chris Dolan's adaptation is a powerful stage account of a relationship between a boy and an older woman which becomes a metaphor for post-war Germany's relationship with the crimes of its past. The only pity is that Borderline's clumsy production doesn't do it justice.

In Germany, shortly after the war, 15-year-old Michael begins an affair with Hanna that is characterised by her desire for him to read to her. But then she disappears. A few years later they come face to face during a war-crimes trial in which Hanna is accused of having been a concentration-camp guard who sent women to their death.

Schlink's examination of collective and individual guilt and the fear that makes us both human and capable of appalling inhumanity is complex and multi-faceted. Dolan cleverly keeps it that way, splitting the character of Michael in three so that the young, old and middle-aged man are always present.

Carol Brannan as Hanna, and Thomas Mullins as the teenage Michael, are outstanding, and you can hardly fail to be moved. You just wish a play that is grappling with such serious issues could have been given the production it deserved.

• Till August 28. Box office: 0131-226 2428.